23 Mar
2005
23 Mar
'05
9:01 p.m.
Hi All.
Our PSTN gateway supports Session-Expires for re-INVITEs. The session
timer is "automagically" enabled when dialing SIP->PSTN.
However, when calling PSTN->SIP re-INVITEs do not happen, however the
PSTN GW does support them.
I think the problem is that PSTN->SIP calls need to (for some reason)
explicitly request session timers.
How would I request this? I know I can add the "Session-Expires:
120;refresher=??" header, but do I then do this in the 200OK response
back to the PSTN GW?
Also, if the PSTN->SIP call is asking the PSTN GW to enable session
timers, would the "refresher=" tag be set to UAS or UAC?
Regards,
Paul